The West African Cherry Orange (Citropsis articulata) is common throughout West Africa, but has become endangered only in Uganda where it is known as Omuburo. In Uganda, Omuboro roots are believed to be a powerful male aphrodisiac.

Independent:

It [the tree] is like a natural Viagra,” said Hannington Oryem-Orida, a professor of botany at Makerere University. “Because of its enormous medicinal properties, the tree is being harvested faster than it can reproduce, thus threatening its long-term survival.”

Seeds can be ordered from a California company.